n8n-nodes-doc-fill

This repo contains two n8n nodes:

• Doc Fill which, given a PDF with a form as input, retrieves the fields based on the given keys and inserts the given value for the retrieved field.
• Doc Create Field which adds a text to a given page's coordinates.

Doc Fill

Doc Fill takes a PDF as input and 3 parameters: Property Name, Property Name Out, Configuration JSON.

• Property Name should be the internal name representing the PDF file given as input (default is 'data').
• Property Name Out is the internal name you want to give to the output PDF file (default is 'data').
• Configuration JSON is a JSON following the structure given below to specify which fields you want to change.

Configuration JSON structure

This is the base structure to configure one field, Configuration JSON is expecting an array of this structure.

interface DocFillConfig {
    key: string;
    value: string;
    type: 'textfield' | 'checkbox' | 'dropdown' | 'radiogroup';
}

• key: The key to find and retrieve the field in the PDF Form.
• value: The value you want to insert for the retrieved field (must be 'true' (check) or 'false' (uncheck) for checkbox field type).
• type: The type of field you want to retrieve (can be 'textfield', 'checkbox', 'dropdown' or 'radiogroup').

Example

[
  {
    "key": "keyOfMyTextField",
    "value": "John Doe",
    "type": "textfield"
  },
  {
    "key": "keyOfMyCheckbox",
    "value": "true",
    "type": "checkbox"
  }
]

Doc Create Field

Doc Create Field takes a PDF as input and 3 parameters: Property Name, Property Name Out, Configuration JSON.

• Property Name should be the internal name representing the PDF file given as input (default is 'data').
• Property Name Out is the internal name you want to give to the output PDF file (default is 'data').
• Configuration JSON is a JSON following the structure given below to specify the text you want to draw and how/where you want to draw it.

Configuration JSON structure

This is the base structure to draw one text, Configuration JSON is expecting an array of this structure.

interface DocCreateFieldConfig {
    page: number,
    value: string;
    options: {
        x: number,
        y: number,
        size: number | undefined,
        opacity: number | undefined,
        colorRed: number | undefined,
        colorGreen: number | undefined,
        colorBlue: number | undefined,
    }
}

• page: The page in the PDF on which you want to draw your text.
• value: The text you want to draw.
• options.x: Position on the x axis where you want to start drawing the text.
• options.y: Position on the y axis where you want to start drawing the text.
• options.size: Size of the text you want to draw. (optional, default is 24)
• options.opacity: Opacity of the text you want to draw, must be between 0 and 1. (optional, default is 1)
• options.colorRed: Red value of the RGB color representation. (optional, default is 0)
• options.colorGreen: Green value of the RGB color representation. (optional, default is 0)
• options.colorBlue: Blue value of the RGB color representation. (optional, default is 0)

Example

[
  {
    "page": 0,
    "value": "this is a test!",
    "options": {
      "x": 300,
      "y": 30,
      "size": 12
    }
  }
]